Wooldridge, Jeffrey M., 1960-
South-Western College, 2000
Buku Teks
Ramanathan, Ramu
Orlandno Harcourt Brace Jovanovich College, 1992
Buku Teks
Wooldridge, Jeffrey M., 1960-
South-Western College, 2000
Buku Teks
Greene, William H., 1951-
Prentice-Hall, 2000
Multimedia
Greene, William H., 1951-
Pearson Education, 2003
Buku Teks